<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>grid-template-columns、grid-template-rows</title>
    <style>
      body {
        margin: 0;
        padding: 20px;
      }
      .container {
        display: grid;
        height: 400px;
        grid-template-columns: 40px 50px auto 50px 40px;
        /* grid-template-rows: 400*0.25=100px 100px auto=400-100-100=200px */
        grid-template-rows: 25% 100px auto;
      }
    </style>
  </head>
  <body>
    <div class="container"></div>
  </body>
</html>
